Low power local area radio controller chipset
433 MHz seems to be perfect fit for this application. There are tons of modules available on the web. I suggest doing your own research and then editing question, because right now it looks like shopping question that is OT on this site.

Here are some configuration options to help you narrow your search:


Not a "full blown MCU" but tiny MCU + Rx module + Tx module;
Tiny MCU + transceiver module;
MCU with built in transceiver module (e.g. BC48R2020);
Transciever module + some shift registers and logic chips to detect 7 bit address and execute 1 bit command;


Note that cost-wise the second solution is probably the best, despite your aversion to using MCU.