SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10801, 10802, 10803, 10804, 10805, 10806, 
    10807, 10808, 10809, 10810, 10811, 
    10812, 10827, 10828, 9686, 10767, 10768, 
    10769, 10770, 10771
  )

Query time 0.00106

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 (10801,10802,10803,10804,10805,10806,10807,10808,10809,10810,10811,10812,10827,10828,9686,10767,10768,10769,10770,10771)"
    }
  }
}