SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    46728, 41102, 3622, 3623, 1432, 3624, 
    35916, 28161, 35917, 4268, 4267, 41428, 
    4826, 3629, 4307, 2162, 3627, 1840, 
    4803, 36496, 4812, 41424, 28160, 4302, 
    36271, 1171, 41138, 4941, 4801, 4799, 
    41427, 4817
  )

Query time 0.00432

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": 32,
          "filtered": 100,
          "index_condition": "cscart_products.product_id in (46728,41102,3622,3623,1432,3624,35916,28161,35917,4268,4267,41428,4826,3629,4307,2162,3627,1840,4803,36496,4812,41424,28160,4302,36271,1171,41138,4941,4801,4799,41427,4817)"
        }
      }
    ]
  }
}