SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    7914, 6790, 6794, 6795, 6796, 6797, 6798, 
    6801, 6917, 6918, 6802, 6803, 6804, 
    6805, 6807, 6808, 6809, 6810, 10195, 
    6811, 6812, 8241, 6800, 6806
  )

Query time 0.00105

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 (7914,6790,6794,6795,6796,6797,6798,6801,6917,6918,6802,6803,6804,6805,6807,6808,6809,6810,10195,6811,6812,8241,6800,6806)"
        }
      }
    ]
  }
}