There is like zero gap. I watched a video on a similar model to try and get under there, but this one is frustratingly different.
I assume this is a gas stove, hence you don't just unplug and move it, right? It sounds like the only way is to turn off gas to the unit, detach from the gas supply, and move it away from the wall, tilting it forward. We have an old Wedgewood and there's probably new forms of life coming into being under there. I do my best to clean as far under as I can reach, but then... it's not a great design feature that makes this area inaccessible. When I googled for your problem, I just got all kinds of lame advice about how to clean under the stove. Yeah. Right.
I would just buy new scissors.