SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    4078, 5006, 4112, 4110, 4109, 4111, 4113, 
    4114, 4116, 5076, 4136, 4219, 4121, 
    4120, 4122, 4129, 4119, 4080, 4079, 
    5883, 4075, 4076, 4089, 4074
  )

Query time 0.00056

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": 24,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (4078,5006,4112,4110,4109,4111,4113,4114,4116,5076,4136,4219,4121,4120,4122,4129,4119,4080,4079,5883,4075,4076,4089,4074)"
    }
  }
}