UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'XMDS/SVPVw1rIIpRcmdnLUdkHkf73keAtn367uEEVg4=' 
WHERE 
  key_id = '495c0b40cbacc4be2a3e39e9fc55958e2067423b6209c24b15a2e298c396327c' 
  AND (
    token = 'XMDS/SVPVw1rIIpRcmdnLUdkHkf73keAtn367uEEVg4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )