SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    24324, 24325, 24330, 24331, 24332, 24333, 
    24335, 24338, 24339, 18577, 10054, 
    19406, 18708, 18710, 18711, 18712, 
    18938, 18944, 23233, 23234, 23237, 
    7030, 7458, 12509
  )

Query time 0.00083

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "rows": 24,
          "filtered": 100,
          "index_condition": "cscart_products.product_id in (24324,24325,24330,24331,24332,24333,24335,24338,24339,18577,10054,19406,18708,18710,18711,18712,18938,18944,23233,23234,23237,7030,7458,12509)"
        }
      }
    ]
  }
}