"Working in tech" is meaningless. What branch? What specific areas do you work in, what specific softwares or hardwares? Are you a technical support, an analyst, a programmer, a tester, website/app designer, or what?
Personally, I'd have thought that anyone with IT skills will be in demand right into their pensioner years. It's the kind of job that's ripe for working from home, part time work, self employment etc.
Even doing domestic IT support, such as setting up, re-installing operating systems, loading programs onto domestic PCs and laptops, or setting up iphones transferring data/apps/photos from one phone to another, setting up home email accounts, etc. There's always people on our local Facebook pages looking for local people who can do that kind of thing. Ideal for someone with a bit of IT knowhow to do in retirement working a few random hours per week to beef up a pension. Lots of small businesses and self employed need help setting up databases, book-keeping software, websites, e-commerce shops, etc., that it could be made into a virtually full time self employment.
For more specialist skills, there'll still be support and help needed for older/rarer operating systems and software long after they're out of fashion as loads of people and organisations have legacy systems. I still do a bit of work occasionally on Novell networks and dos PCs, which is absolutely crazy as it's about 30 years since they were basically obsolete, but some people/organisations still have archives based on very old PCs and networks! Not so long ago, I helped a small business recover some very long lost data from a geriatric PC using the old dos based Sage Line 50 book-keeping system - it had been hobbling along being cranked up for historic sales history information every month or so when an old transaction needed to be checked and verified, but finally, inevitably, died. I have a cupboard full of old PCs and laptops, going right back to the 80s, with all kinds of old desktop software and knew I had a few old versions of Sage on some of them, so I gave it a try, loaded up the clients' ancient set of floppy disks backup and hey presto, we managed to access the data they needed - as an added extra (chargeable of course), I did a full data dump onto a csv file, converted it into Excel, then into an Access database and handed it all back to them - not perfect, and not all data recoverable, but probably 90% and they were delighted. I can do that and I've had no formal IT training nor education - just what I've picked up along the way.
Rather than expecting to find an employer with a ready made job that you can walk into, perhaps you and other older workers facing retirement, etc., should be considering self employment as it's really an excellent option for people wanting to work from home, or work part time, or have flexibility around other commitments such as childcare, hospital visits, holidays, hobbies, etc.