UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'KOn4l1K1SKQPlU6SBe4nh455dTylt8RTGrrEcd0BAaY=' 
WHERE 
  key_id = '21a5a9a4943495427a73da95f62f7daf1dd381338f6e5013b888acccadb3f790' 
  AND (
    token = 'KOn4l1K1SKQPlU6SBe4nh455dTylt8RTGrrEcd0BAaY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )