UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'gtnHXgu+7wsBMrxXMTRp490QvjoTAgPwdCTeIiHrdMs=' 
WHERE 
  key_id = '68f6b778f9372e38fecb04da10cb8e49410692891905c951a926f5fce6a325db' 
  AND (
    token = 'gtnHXgu+7wsBMrxXMTRp490QvjoTAgPwdCTeIiHrdMs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )