### 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boolean property, as well as the `expiration` property that contains the UNIX timestamp past of which the key is no longer valid for authentication.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
final BulkUpdateApiKeyRequest updateRequest = new BulkUpdateApiKeyRequest(
            randomList(1, 3, () -> randomAlphaOfLengthBetween(3, 5)),
            requestRoleDescriptors,
            Map.of()
        );
        final PlainActionFuture<BulkUpdateApiKeyResponse> updateFuture = new PlainActionFuture<>();
        service.updateApiKeys(authentication, updateRequest, userRoleDescriptorsWithWorkflowsRestriction, updateFuture);
        final IllegalArgumentException e2 = expectThrows(IllegalArgumentException.class, createFuture::actionGet);
        assertThat(e2.getMessage(), containsString("owner user role descriptors must not include restriction"));
    }
    private static RoleDescriptor randomRoleDescriptorWithRemoteIndexPrivileges() {
        return new RoleDescriptor(
            randomAlphaOfLengthBetween(3, 90),
            randomSubsetOf(ClusterPrivilegeResolver.names()).toArray(String[]::new),
            RoleDescriptorTests.randomIndicesPrivileges(0, 3),
            RoleDescriptorTests.randomApplicationPrivileges(),
            RoleDescriptorTests.randomClusterPrivileges(),
            generateRandomStringArray(5, randomIntBetween(2, 8), false, true),
            RoleDescriptorTests.randomRoleDescriptorMetadata(randomBoolean()),
            Map.of(),
            RoleDescriptorTests.randomRemoteIndicesPrivileges(1, 3),
            RoleRestrictionTests.randomWorkflowsRestriction(1, 3)
        );
    }
    private static RoleDescriptor randomRoleDescriptorWithWorkflowsRestriction() {
        return new RoleDescriptor(
            randomAlphaOfLengthBetween(3, 90),
            randomSubsetOf(ClusterPrivilegeResolver.names()).toArray(String[]::new),
            RoleDescriptorTests.randomIndicesPrivileges(0, 3),
            RoleDescriptorTests.randomApplicationPrivileges(),