There is no reason you can't build your parameters based on runtime conditions:

my $cutoff = time - 86400;
my $first_seen_time = {};

if ( $user_wants_dates_before_today ) {
    $first_seen_time = {
        '<' => $cutoff,
    };
} else {
    $first_seen_time = {
        '>=' => $cutoff,
    };
);

my ( $sql, @bind ) = $sqla->select(
    -columns => 'id, name',
    -from    => 'users',
    -where   => {
        status          => $status,
        first_seen_time => $first_seen_time,
    },
);
[download]

Also, for another approach, remember that you can insert actual SQL into the parameters to a SQLA call, and you could generate *that* SQL snippet based on your run-time conditions.

Hope this helps!