HPEXPIRETIME key FIELDS numfields field [field ...]
@read,
@hash,
@fast,
HPEXPIRETIME has the same semantics as HEXPIRETIME, but returns the absolute Unix expiration timestamp in milliseconds since Unix epoch instead of seconds.
redis> HSET mykey field1 "hello" field2 "world"
(integer) 2
redis> HEXPIRE mykey 300 FIELDS 2 field1 field2
1) (integer) 1
2) (integer) 1
redis> HPEXPIRETIME mykey FIELDS 2 field1 field2
1) (integer) 1715705913659
2) (integer) 1715705913659
-2 if no such field exists in the provided hash key, or the provided key does not exist.-1 if the field exists but has no associated expiration set.