Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88aef2a7ee17df88579bd2f75648ae94b461f378418cfe604880293c6ec8971c' 
  AND token = 'GhEEfdPWNV1rsNEslDUd7eQ43JRrh5Ec/dyZ3TlFCD8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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