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.tbs_noct_fingerprint: ad80a42b6cbdb056649a5b81a2a0987df66813a88f5c27ecc8dc7d60510725c4 and precert: true
to
parsed.tbs_noct_fingerprint: ad80a42b6cbdb056649a5b81a2a0987df66813a88f5c27ecc8dc7d60510725c4 AND precert: true
If this isn't what you intended, you can run your raw query without expansion.