Censys expands queries to provide additional functionality. For example, the query a:zmap.io
executes a DNS lookup and expands to ip:141.212.120.90.
Your query was changed from:
parsed.subject_key_info.fingerprint_sha256: a79ffd607332bb67c05e15bbc883c6e9dd88e203a8eb62c689dd413efaacd58f
to
parsed.subject_key_info.fingerprint_sha256: a79ffd607332bb67c05e15bbc883c6e9dd88e203a8eb62c689dd413efaacd58f
If this isn't what you intended, you can run your raw query without expansion.