SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10216, 10217, 10218, 10219, 10220, 10221, 
    10222, 10241, 10242, 10243, 10244, 
    10245, 10246, 10247, 10248, 10249, 
    10250, 10251, 10252, 10253
  )

Query time 0.00043

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 (10216,10217,10218,10219,10220,10221,10222,10241,10242,10243,10244,10245,10246,10247,10248,10249,10250,10251,10252,10253)"
    }
  }
}