Is it possible to use SSAO in Eevee without world lighting? I'd love to use SSAO in eevee to just add a little depth to my scene, but I've created a studio-esque lighting set up, and as such need to keep the world lighting dark, only lighting my scene with lights. 

Is there a way to force AO in a dark scene? It seems like AO in eevee only works when the world is emitting light. Is there a workaround for this?
If you only need it in the final render, you can apply it in the compositor:




Enable the Ambient Occlusion pass in Properties > Render Layers > Passes.
Use a Mix node to multiply it with the render.