Access tokens Instagram/Facebook

Hi, So I was wondering, where do I store access token's that I have received from Facebook or Instagram?

I have a cronjob that uses the access token to fetch public data from Facebook and Instagram (from several different feeds) and I'm not quite sure if it's a smart idea to store this in my database. Neither do I wanna have myself keep logging in to receive a new access token.

I've been trying to search for an answer everywhere but I can't really seem to get an clear answer on my specific case.

Hopefully someone can help me out.

Thanks in advance!