Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e88a19b403a8d001ea06e0c94fa5803882e705852e05b59a4b7740275064fd3' 
  AND token = 'vb7KEc8lGyZpRUfvH0lHu8UBmGH5tH9WMczQiapr/P0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}