How to run cron job based on database entries using laravel?

In my application I am using one functionality which I need to run on a specific time. I saved that time in my database. Based on that my scheduler will run the functionality. Currently I have used cron method which run that functionality every particular minutes. But not run cron at the minutes like 2,3,4 etc. or any other any time. How can I run that? Is there any specific method which take any values and based on that it run cron?

via Chebli Mohamed