SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    64349, 63226, 63434, 61623, 61478, 61444, 
    61465, 61464, 61452, 61466, 60120, 
    64351
  )

Query time 0.00074

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 12,
      "filtered": 100,
      "attached_condition": "cscart_products.product_id in (64349,63226,63434,61623,61478,61444,61465,61464,61452,61466,60120,64351)"
    }
  }
}

Result