鍵 is a Japanese kanji written with 17 strokes, listed here under the keyword “key”. It is built from 金 (gold) and 建 (build). In Remembering the Kanji by James W. Heisig it is frame 418.
On KumiJi Glyph Explorer, open the parts search and type “gold” + “build”. 鍵 is among the results, together with every other character containing the same shapes.
Open 鍵 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.