After discovering that I could not make a working copy of my only key, I read up on Toyota's split-wafers - they wear out and cause problems.
So I took out the ignition cylinder, dissassembled it and simply removed those wafers - problem solved; keys work in it.
I put it back in and bam - no start or crank. The car dome light doesn't come on either.
I believe my mistake lay in forgetting to disconnect the battery. I did afterwards, waited, reconnected and no luck. Is there a place I should start checking for blown fuses or is something to do with the ignition switch (which I cannot yet locate)? These are simple metal, not transponder keys.