Censys expands queries to provide additional functionality. For example, the query a:zmap.io
executes a DNS lookup and expands to ip:18.104.22.168.
Your query was changed from:
parsed.tbs_noct_fingerprint: e25ec111abdd64e3721d03d4de642f0bf5b059553ec4a4acd8c0f4ffd4a33f46 and precert: true
parsed.tbs_noct_fingerprint: e25ec111abdd64e3721d03d4de642f0bf5b059553ec4a4acd8c0f4ffd4a33f46 AND precert: true
If this isn't what you intended, you can run your raw query without expansion.