You can schedule the scenario to run every minute to search for the rows containing the time between the last run and the current time.
But running scenarios every minute will quickly consume lots of operations, because 1 minute interval = 24*60 = 1440 check runs per day. You might want to consider increasing it to 10-30 minutes, or have another scenario schedule a Cron Job webhook callback using apps like 0CodeKit that allows you to schedule a “callback” to a “Custom Webhook” trigger in another scenario.