You use WASD/arrows, which show you one space in that direction. To move, you look in a direction and hit space. I'm working on a button you can press which quickly flashes through a whole region of pixels in the direction you're looking, so you can get an idea of what the terrain looks like without having to wander around aimlessly for multiple minutes to find a single object
I think I'm also going to significantly reduce the amount of empty space. What's tricky is that when you're viewing the maps it generates, they look almost too cluttered, but when you're playing, even forests, which are the densest parts, feel empty