SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10317, 10322, 12572, 12575, 12571, 12573, 
    10273, 10272, 10271, 10270, 10269, 
    10268, 10267, 10266, 10265, 10264, 
    10263, 12570, 12567, 12569
  )

Query time 0.00088

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 20,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (10317,10322,12572,12575,12571,12573,10273,10272,10271,10270,10269,10268,10267,10266,10265,10264,10263,12570,12567,12569)"
    }
  }
}