SELECT 
  * 
FROM 
  cscart_ec_extra_product_data 
WHERE 
  product_id IN (
    411, 412, 413, 414, 391, 392, 393, 394, 
    395, 396, 397, 398, 399, 400, 401, 402, 
    379, 380, 381, 382, 383, 384, 385, 386, 
    387, 388, 389, 390, 363, 364, 365, 366
  )

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "4.70"
    },
    "table": {
      "table_name": "cscart_ec_extra_product_data",
      "access_type": "ALL",
      "rows_examined_per_scan": 13,
      "rows_produced_per_join": 6,
      "filtered": "50.00",
      "cost_info": {
        "read_cost": "3.40",
        "eval_cost": "1.30",
        "prefix_cost": "4.70",
        "data_read_per_join": "260"
      },
      "used_columns": [
        "product_id",
        "maximum_adults",
        "maximum_children",
        "maximum_room_occupancy",
        "minimum_length_of_stay",
        "maximum_length_of_stay",
        "company_id",
        "blocked_date"
      ],
      "attached_condition": "(`pankajecarter_systemfour`.`cscart_ec_extra_product_data`.`product_id` in (411,412,413,414,391,392,393,394,395,396,397,398,399,400,401,402,379,380,381,382,383,384,385,386,387,388,389,390,363,364,365,366))"
    }
  }
}