UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Vn26rNTBxrqqYZY3JsBTXxIhl6cQrDdZ2IEIu2QT8DI=' 
WHERE 
  key_id = '1847fcf273f55da738d6c0755a1c2f435a048cf63326ac1eebe10ac890e7b12b' 
  AND (
    token = 'Vn26rNTBxrqqYZY3JsBTXxIhl6cQrDdZ2IEIu2QT8DI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )