Tell me where to look, I'm not sure where the focus is
Or is that giant watermark in the way?
Edit: or do you mean the door itself? In that case, no, that is definitely (and obviously) not a keyhole nor does it have a visible one
Edit again: yes, the circle with grooves is the door itself, read the edit
Tell me this isn't a key slot, or at the very least an opening.
Look at the circle with grooves.