UPDATE 
  tmall_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'IZ/HkkGUvcLtsFCKr+znX4xdwQCh1GBiSOi5FrF1BT0=' 
WHERE 
  key_id = '38ac906fbd8eaaed546dadec593db5c08befa18a8a20150de25c64067f49463f' 
  AND (
    token = 'IZ/HkkGUvcLtsFCKr+znX4xdwQCh1GBiSOi5FrF1BT0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )