SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    316, 315, 314, 313, 312, 311, 310, 309, 
    308, 307, 306, 305, 304, 303, 302, 301, 
    300, 299, 298, 297
  )

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "ALL",
          "possible_keys": ["PRIMARY"],
          "rows": 53,
          "filtered": 37.73584747,
          "attached_condition": "cscart_products.product_id in (316,315,314,313,312,311,310,309,308,307,306,305,304,303,302,301,300,299,298,297)"
        }
      }
    ]
  }
}