I bought an old Honda key blank that looked just like mine on eBay and took it to my local locksmith and they did a really decent job!

 

here is the key I bought

OEM 1982-1991 Honda Master Key Blank for Classic Accord Civic Prelude CRX | eBay

Unlock the potential of your classic Honda with our OEM Master Key Blank, compatible with 1982-1991 models like the Accord, Civic, Prelude, and CRX. This high-quality key blank (part number 35113-SE3-003) is a genuine product made by HONDA in the USA. It features a warranty for peace of mind...

ebay.us

 

You need to get a local locksmith to work the keys for you.

 

I had one cut at Ace Hardware a couple months ago. No problems with it.