How to delete authentication code from database after a time period

Hi All,

I am hoping someone can help me here.

I need to set up a schedule that regularly runs to delete an authentication code sent to user’s email. I have setup data base table setup correctly with a time stamp when the code is sent. But I am not sure how to run the schedule and delete the code if the user does not use the code in xx minutes.

Any help is appreciated - thanks in advance