UPDATE 
  tmall_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'VjoVLQ/tXgTncvpK6mD+TR6H9SCEBMSwdJy3ELaYJEs=' 
WHERE 
  key_id = '8ad81b17392d0bf1915ed4c3a4a3997cf64100b536500b0b552cea8cc1e028df' 
  AND (
    token = 'VjoVLQ/tXgTncvpK6mD+TR6H9SCEBMSwdJy3ELaYJEs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )