PYTHON: How to delete a file in python after X amount of time, without constantly looking up the time

Question

I was making a temporary file storage website, and all of the features of it are completed, but due to it being a "temporary" file storage website, it needs to delete files and make space for more files, but how'd one go about making a system that automatically deletes the file after let's say 1 hour of time or x minutes of time?

The file is stored in the database has the following properties:

1. HASHED_FILE_NAME - The hashed file name of the original file, the way it is stored in the directory, let's say the file is called test.mp4 so what the program will do is that, it will run a hashing algorithm using python's secret.token_hex() method, which will ultimately convert it to a string like bf290fa34cf185ae.mp4.

2. LINK_TO_THE_FILE - It is basically to add a extra layer of authentication so that no stranger stumbles upon the file on it's self, so it uses the same hashing function as before (secrets.token_hex()), but it is used to point back to the HASHED_FILE_NAME so let's say if you go to the link MY-WEBSITE.com/files/04f579669576dbe4 the code 04f579669576dbe4 is going to point back to bf290fa34cf185ae.mp4 which was originally test.mp4.

3. PRIMARY_KEY - This is pretty self explanatory, it just stores the primary key for the file.

4. DATE_CREATED - This might be useful, it stores the date the file was uploaded on the server.

I just can't figure out how to use these properties of the file to delete the file after x amount of time, without constantly looking up the current time in the program.

Any solutions or suggestions are gladly accepted!
Thank you for your time!