SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    406851, 447289, 403492, 409045, 411798, 
    455469, 403314, 459175, 412726, 446945, 
    419788, 441409, 421788, 429875, 408990, 
    457492, 402535, 424481, 421915, 427033, 
    425013, 423301, 403335, 416458, 413195, 
    452439, 456232, 409981, 422412, 444874, 
    411736, 410485
  )

Query time 0.00072

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.0564324,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "loops": 1,
          "rows": 32,
          "cost": 0.0564324,
          "filtered": 100,
          "attached_condition": "cscart_products.product_id in (406851,447289,403492,409045,411798,455469,403314,459175,412726,446945,419788,441409,421788,429875,408990,457492,402535,424481,421915,427033,425013,423301,403335,416458,413195,452439,456232,409981,422412,444874,411736,410485)"
        }
      }
    ]
  }
}