Likely a modern blend or variant of Kieran
Keyron is a contemporary American name, likely created as a phonetic variant of the Irish name Kieran or a blend of the prefix 'Key-' with the suffix '-ron'. As a variant of Kieran, it would share the meaning 'little dark one' or 'black-haired'. It represents a modern trend of reinventing traditional Gaelic sounds with unique spellings.
Less common today
Keyron isn't in the latest US Top 1000. It last peaked at #5,064 in 1998.
US births per 5-year period, 1990βpresent (SSA data).