SELECT 
  cscart_products.product_id, 
  cscart_products.product_code, 
  cscart_products.product_type, 
  cscart_products.status, 
  cscart_products.company_id, 
  cscart_products.list_price, 
  cscart_products.amount, 
  cscart_products.weight, 
  cscart_products.tracking, 
  cscart_products.is_edp 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    332, 334, 335, 330, 329, 328, 333, 331
  )

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "19.21"
    },
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 8,
      "rows_produced_per_join": 8,
      "filtered": "100.00",
      "index_condition": "(`danishecarter_25_march`.`cscart_products`.`product_id` in (332,334,335,330,329,328,333,331))",
      "cost_info": {
        "read_cost": "17.61",
        "eval_cost": "1.60",
        "prefix_cost": "19.21",
        "data_read_per_join": "35K"
      },
      "used_columns": [
        "product_id",
        "product_code",
        "product_type",
        "status",
        "company_id",
        "list_price",
        "amount",
        "weight",
        "is_edp",
        "tracking"
      ]
    }
  }
}