UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'gPykFhHSjwpmY2VZX8QCiymKT1ehH1KY+JB1QEMPR+E=' 
WHERE 
  key_id = 'a5461d84b4e58a9d871f9b82ab4ca2dd9ba06f85beb281d693489954cd640f11' 
  AND (
    token = 'gPykFhHSjwpmY2VZX8QCiymKT1ehH1KY+JB1QEMPR+E=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )