With cron job execution tracking, when your cron job has been triggered and is running, your will see an "executing (x seconds)" row immediately in the logs of this cron job. The "x" is the seconds that the cron job has been running. Once the execution finishes, the result will be automatically loaded. Check the animation below for the process:
This is extremely useful for your awareness of that the cron job has been successfully fired and how long it's been running. So that you don't need to worry about you miss the cron job trigger time.