UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'n2a9tmnMpmQjVLEBhEg1mcmEVo6syx2zPnIWTRrOtGY=' 
WHERE 
  key_id = '21d7f8853d23a6d672f831a6a4b3d5aac36f6a096461afb7ff066098ecf0d07b' 
  AND (
    token = 'n2a9tmnMpmQjVLEBhEg1mcmEVo6syx2zPnIWTRrOtGY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )