PEXPIREAT has the same effect and semantic as EXPIREAT, but the Unix time at
which the key will expire is specified in milliseconds instead of seconds.
@return
@integer-reply, specifically:
1if the timeout was set.0ifkeydoes not exist or the timeout could not be set (see:EXPIRE).
@examples
SET mykey "Hello"
PEXPIREAT mykey 1555555555005
TTL mykey
PTTL mykey