SELECT 
  cscart_product_feature_variants.variant_id, 
  cscart_product_feature_variants.position, 
  cscart_product_feature_variants.color, 
  cscart_product_feature_variant_descriptions.variant 
FROM 
  cscart_product_feature_variants 
  LEFT JOIN cscart_product_feature_variant_descriptions ON cscart_product_feature_variants.variant_id = cscart_product_feature_variant_descriptions.variant_id 
  AND cscart_product_feature_variant_descriptions.lang_code = 'en' 
WHERE 
  cscart_product_feature_variants.variant_id IN (
    39, 65, 45, 91, 1197, 1199, 1195, 1200, 
    1201, 66, 80, 82, 108, 69, 70, 71, 75, 
    67, 72, 89, 73, 54, 74, 68, 78, 81, 110, 
    76, 77, 79, 109, 55, 83, 84
  ) 
ORDER BY 
  cscart_product_feature_variants.position ASC, 
  cscart_product_feature_variant_descriptions.variant ASC

Query time 0.00092

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "76.82"
    },
    "ordering_operation": {
      "using_temporary_table": true,
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_product_feature_variants",
            "access_type": "ALL",
            "possible_keys": [
              "PRIMARY"
            ],
            "rows_examined_per_scan": 166,
            "rows_produced_per_join": 33,
            "filtered": "20.48",
            "cost_info": {
              "read_cost": "29.22",
              "eval_cost": "6.80",
              "prefix_cost": "36.02",
              "data_read_per_join": "38K"
            },
            "used_columns": [
              "variant_id",
              "color",
              "position"
            ],
            "attached_condition": "(`pankajecarter_systemfour`.`cscart_product_feature_variants`.`variant_id` in (39,65,45,91,1197,1199,1195,1200,1201,66,80,82,108,69,70,71,75,67,72,89,73,54,74,68,78,81,110,76,77,79,109,55,83,84))"
          }
        },
        {
          "table": {
            "table_name": "cscart_product_feature_variant_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "pankajecarter_systemfour.cscart_product_feature_variants.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 33,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "34.00",
              "eval_cost": "6.80",
              "prefix_cost": "76.82",
              "data_read_per_join": "102K"
            },
            "used_columns": [
              "variant_id",
              "variant",
              "lang_code"
            ]
          }
        }
      ]
    }
  }
}