UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'e6jU6KX6gMBVOwnZe7+dVUHmKRpiAet8I3BDz//164o=' 
WHERE 
  key_id = '6f84b2583df5ae490c3904649984c9df49555d96f83a4863f854a5e2b2c0d082' 
  AND (
    token = 'e6jU6KX6gMBVOwnZe7+dVUHmKRpiAet8I3BDz//164o=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )