SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  descr1.product as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id, 
  descr1.full_description as full_description 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_features_values as var_val_18 ON var_val_18.product_id = products.product_id 
  AND var_val_18.lang_code = 'en' 
  AND var_val_18.feature_id = 18 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
  LEFT JOIN cscart_ec_extra_product_data AS epd ON epd.product_id = products.product_id 
WHERE 
  1 
  AND (
    var_val_18.variant_id IN (89)
  ) 
  AND cscart_categories.category_id IN (199) 
  AND companies.status IN ('A') 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND products.parent_product_id = 0 
  AND epd.product_id IS NULL 
  AND products.product_type != 'D' 
GROUP BY 
  products.product_id 
ORDER BY 
  product asc, 
  products.product_id ASC 
LIMIT 
  0, 32

Query time 0.00121

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "37.45"
    },
    "ordering_operation": {
      "using_filesort": true,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": false,
        "nested_loop": [
          {
            "table": {
              "table_name": "cscart_categories",
              "access_type": "const",
              "possible_keys": [
                "PRIMARY",
                "c_status",
                "p_category_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 1,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.20",
                "prefix_cost": "0.00",
                "data_read_per_join": "3K"
              },
              "used_columns": [
                "category_id",
                "storefront_id",
                "usergroup_ids",
                "status"
              ]
            }
          },
          {
            "table": {
              "table_name": "companies",
              "access_type": "ALL",
              "possible_keys": [
                "PRIMARY"
              ],
              "rows_examined_per_scan": 2,
              "rows_produced_per_join": 1,
              "filtered": "50.00",
              "cost_info": {
                "read_cost": "2.29",
                "eval_cost": "0.20",
                "prefix_cost": "2.49",
                "data_read_per_join": "8K"
              },
              "used_columns": [
                "company_id",
                "status",
                "company"
              ],
              "attached_condition": "(`pankajecarter_systemsix`.`companies`.`status` = 'A')"
            }
          },
          {
            "table": {
              "table_name": "products_categories",
              "access_type": "ref",
              "possible_keys": [
                "PRIMARY",
                "pt"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "const"
              ],
              "rows_examined_per_scan": 11,
              "rows_produced_per_join": 11,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "1.25",
                "eval_cost": "2.20",
                "prefix_cost": "5.94",
                "data_read_per_join": "176"
              },
              "used_columns": [
                "product_id",
                "category_id"
              ]
            }
          },
          {
            "table": {
              "table_name": "var_val_18",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "fl",
                "variant_id",
                "lang_code",
                "product_id",
                "fpl",
                "idx_product_feature_variant_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "feature_id",
                "product_id",
                "variant_id",
                "lang_code"
              ],
              "key_length": "15",
              "ref": [
                "const",
                "pankajecarter_systemsix.products_categories.product_id",
                "const",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 11,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "11.00",
                "eval_cost": "2.20",
                "prefix_cost": "19.14",
                "data_read_per_join": "8K"
              },
              "used_columns": [
                "feature_id",
                "product_id",
                "variant_id",
                "lang_code"
              ]
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "status",
                "idx_parent_product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "pankajecarter_systemsix.products_categories.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "8.53",
              "cost_info": {
                "read_cost": "11.00",
                "eval_cost": "0.19",
                "prefix_cost": "32.34",
                "data_read_per_join": "5K"
              },
              "used_columns": [
                "product_id",
                "product_type",
                "status",
                "company_id",
                "usergroup_ids",
                "parent_product_id"
              ],
              "attached_condition": "((`pankajecarter_systemsix`.`products`.`company_id` = `pankajecarter_systemsix`.`companies`.`company_id`) and (`pankajecarter_systemsix`.`products`.`parent_product_id` = 0) and ((`pankajecarter_systemsix`.`products`.`usergroup_ids` = '') or find_in_set(0,`pankajecarter_systemsix`.`products`.`usergroup_ids`) or find_in_set(1,`pankajecarter_systemsix`.`products`.`usergroup_ids`)) and (`pankajecarter_systemsix`.`products`.`status` = 'A') and (`pankajecarter_systemsix`.`products`.`product_type` <> 'D'))"
            }
          },
          {
            "table": {
              "table_name": "epd",
              "access_type": "ALL",
              "rows_examined_per_scan": 3,
              "rows_produced_per_join": 0,
              "filtered": "33.33",
              "not_exists": true,
              "using_join_buffer": "Block Nested Loop",
              "cost_info": {
                "read_cost": "2.44",
                "eval_cost": "0.19",
                "prefix_cost": "34.97",
                "data_read_per_join": "37"
              },
              "used_columns": [
                "product_id"
              ],
              "attached_condition": "(<if>(found_match(epd), isnull(`pankajecarter_systemsix`.`epd`.`product_id`), true) and <if>(is_not_null_compl(epd), (`pankajecarter_systemsix`.`epd`.`product_id` = `pankajecarter_systemsix`.`products_categories`.`product_id`), true))"
            }
          },
          {
            "table": {
              "table_name": "descr1",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id",
                "lang_code"
              ],
              "key_length": "9",
              "ref": [
                "pankajecarter_systemsix.products_categories.product_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.94",
                "eval_cost": "0.19",
                "prefix_cost": "36.09",
                "data_read_per_join": "4K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "product",
                "full_description"
              ]
            }
          },
          {
            "table": {
              "table_name": "prices",
              "access_type": "ref",
              "possible_keys": [
                "usergroup",
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "key": "usergroup",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "pankajecarter_systemsix.products_categories.product_id"
              ],
              "rows_examined_per_scan": 2,
              "rows_produced_per_join": 1,
              "filtered": "92.52",
              "using_index": true,
              "cost_info": {
                "read_cost": "0.98",
                "eval_cost": "0.35",
                "prefix_cost": "37.45",
                "data_read_per_join": "41"
              },
              "used_columns": [
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "attached_condition": "((`pankajecarter_systemsix`.`prices`.`lower_limit` = 1) and (`pankajecarter_systemsix`.`prices`.`usergroup_id` in (0,0,1)))"
            }
          }
        ]
      }
    }
  }
}

Result

product_id product company_name product_type parent_product_id full_description
172 Compact Full HD Camcorder CS-Cart P 0 <p> The T10 camcorder was designed to capture memories in comfort and in style. It boasts an ultra compact size, alightweight body and a brushed metal finish creating a subtle but sophisticated look and feel. In fact, its smooth curves fit so comfortably in your hand, it makes shooting video for longer periods of time more enjoyable </p>
175 F50 Flash Memory 52x Zoom Camcorder (Silver) CS-Cart P 0 <p>2.7&rdquo; LCD Touch Panel display gives you a clearer picture of what you are shooting. By leveraging the latest in LCD display technology, the Touch Panel delivers clean, crisp images that are saturated with natural color and deep, dynamic detail, enabling you to shoot with enhanced comfort and confidence in any external light condition.</p>
173 H300 Long Zoom Compact Full HD Camcorder (Black) CS-Cart P 0 <p>3.0" LCD Touch Panel display gives you a clearer picture of what you are shooting. By leveraging the latest in LCD display technology, the Touch Panel delivers clean, crisp images that are saturated with natural color and deep, dynamic detail, enabling you to shoot with enhanced comfort and confidence in any external light condition. With the large 3.0" display, it&rsquo;s much easier to browse through content and find the exact features you&rsquo;re looking for. Most useful, the extra large LCD screen makes it easier to select the features you need.</p>
161 MV800 16.1 Megapixel MultiView Compact Digital Camera CS-Cart P 0 <p>The 3.0" Flip-Out Display lets you take and view great pictures from multiple angles. Easily adjust the LCD from 0 to 180 degrees and make any shot possible. Snap a picture over a crowd or get waist-level candids of kids and pets, or spin the display for perfectly framed self-portraits. Choose from 3 shutter options to comfortably snap pics from any position.</p>
163 NX200 20.3 Megapixel Compact System Camera CS-Cart P 0 <p>Capture every moment in true-to-life quality. With the best-in-class resolution of the extra large 20.3 MP APS-C CMOS sensor, shots are rich, deep and exquisitely detailed. For active subjects, stills can be captured beautifully with 7fps Continuous Shot/100ms AF Speed. Then review your shot on the large 3.0&rdquo; AMOLED display&mdash;made for sharper images and glare reduction.</p>
164 WB210 10MB 14 Megapixel Slim Digital Camera (Red) CS-Cart P 0 <p>When shooting in low light, zooming in on a shot, or when your camera is unsteady, Optical Image Stabilization helps eliminate blurry results. This feature stabilizes your photos by changing their path to the image sensor before they are recorded digitally. Your photos come out sharp and ideally focused.</p>