SELECT 
  * 
FROM 
  cscart_ec_seat_categories 
WHERE 
  layout_id = 2 
ORDER BY 
  name ASC

Query time 0.00080

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "2.40"
    },
    "ordering_operation": {
      "using_filesort": true,
      "table": {
        "table_name": "cscart_ec_seat_categories",
        "access_type": "ref",
        "possible_keys": [
          "idx_layout_id"
        ],
        "key": "idx_layout_id",
        "used_key_parts": [
          "layout_id"
        ],
        "key_length": "4",
        "ref": [
          "const"
        ],
        "rows_examined_per_scan": 2,
        "rows_produced_per_join": 2,
        "filtered": "100.00",
        "index_condition": "(`pankajecarter_setup3`.`cscart_ec_seat_categories`.`layout_id` <=> 2)",
        "cost_info": {
          "read_cost": "2.00",
          "eval_cost": "0.40",
          "prefix_cost": "2.40",
          "data_read_per_join": "1K"
        },
        "used_columns": [
          "category_id",
          "layout_id",
          "name",
          "price",
          "color"
        ]
      }
    }
  }
}