### Description

The [Get API key information API](https://www.elastic.co/guide/en/elasticsearch/reference/master/security-api-get-api-key.html) can currently filter the returned keys by:
 * key id/name
 * keys owned by the calling user
 * keys owned by other users, by `realm_name` and `username`

Irrespective of the filtering used, both invalidated and expired (but not yet deleted) keys will be included in the response.
In the response, keys have the `invalidated` boolean property, as well as the `expiration` property that contains the UNIX timestamp past of which the key is no longer valid for authentication.

I propose we introduce a way for the API to support retrieving:
* only valid API keys (not return invalidated keys) - using a boolean request parameter
* keys not expired before a certain timestamp - using a timestamp parameter that defaults to "now" - also note that keys' experiation date is always checked against the local node's clock
x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/ApiKeyServiceTests.java
assertEquals(1, roleDescriptors.size());
        assertEquals("a role", roleDescriptors.get(0).getName());
        assertArrayEquals(new String[] { "all" }, roleDescriptors.get(0).getClusterPrivileges());
        assertEquals(0, roleDescriptors.get(0).getIndicesPrivileges().length);
        assertEquals(0, roleDescriptors.get(0).getApplicationPrivileges().length);
        roleBytes = new BytesArray(
            "{\"reporting_user\":{\"cluster\":[],\"indices\":[],\"applications\":[],\"run_as\":[],\"metadata\":{\"_reserved\":true},"
                + "\"transient_metadata\":{\"enabled\":true}},\"superuser\":{\"cluster\":[\"all\"],\"indices\":[{\"names\":[\"*\"],"
                + "\"privileges\":[\"all\"],\"allow_restricted_indices\":true}],\"applications\":[{\"application\":\"*\","
                + "\"privileges\":[\"*\"],\"resources\":[\"*\"]}],\"run_as\":[\"*\"],\"metadata\":{\"_reserved\":true},"
                + "\"transient_metadata\":{}}}\n"
        );
        final RoleReference.ApiKeyRoleType apiKeyRoleType = randomApiKeyRoleType();
        roleDescriptors = service.parseRoleDescriptorsBytes(apiKeyId, roleBytes, apiKeyRoleType);
        assertEquals(2, roleDescriptors.size());
        assertEquals(
            Set.of("reporting_user", "superuser"),
            roleDescriptors.stream().map(RoleDescriptor::getName).collect(Collectors.toSet())
        );
        assertThat(
            roleDescriptors.get(1),
            equalTo(
                apiKeyRoleType == RoleReference.ApiKeyRoleType.LIMITED_BY ? SUPERUSER_ROLE_DESCRIPTOR : LEGACY_SUPERUSER_ROLE_DESCRIPTOR
            )
        );
        
        roleBytes = new BytesArray("""
                {
                    "role_with_restriction":{
                        "indices":[{"names":["books"],"privileges":["read"]}],