Since the rust area is so small, you might want to first try removing the rust with the pointed end of a needle or the corner of a razor blade. This would enable you to reach the tiny areas with precision.
If there is rust there, be sure to remove all rust as you possibly can, even close to the edges of the chips. This is to minimize the possibility of having the rust continue underneath the applications of primer and/or touch-up paint.
We have seen many older Hondas having body rust around and below the gas door lids, so waxing the areas would help slow or prevent it from starting (especially if you live in the snow/ice belts, yes).
On a related note, the opened gas door on my 7th does not want to stay open. It moves freely on its hinge, so I suspect the spring in the mechanism is defective. I've inquired with my Honda dealership about getting a new spring mechanism, but that would also mean getting an unpainted gas door lid as well. As I could not use the factory-painted gas door lid separately, I learned to live with its defective spring.