UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'nsIvcYPh7p6Rk500NBjdnBRuUYUXxLy4xfI52XUYTDw=' 
WHERE 
  key_id = '50aa78f5c7eab81b0bf9775697443946904bed9d914757d3b60d593912cc1bd0' 
  AND (
    token = 'nsIvcYPh7p6Rk500NBjdnBRuUYUXxLy4xfI52XUYTDw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )