UPDATE 
  tmall_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'P6pbJ9mSE84gm0v3jp5ybBcEWSpCWzpBcJssJMFHGpg=' 
WHERE 
  key_id = '8e042cad257e62a268e59b911e719da78020a06553c2d1e14c997850c1bf4696' 
  AND (
    token = 'P6pbJ9mSE84gm0v3jp5ybBcEWSpCWzpBcJssJMFHGpg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )