Originally reported in https://github.com/localstack/localstack/issues/2099, the CreationTime for CF stacks was hardcoded. This was fixed in in LocalStack itself (https://github.com/localstack/localstack/pull/2103), but is now also fixed in moto (https://github.com/spulec/moto/pull/2818).

I don't know what version of moto you're using, and whether it's acceptable to use dev-releases, but if you do: 

moto 1.3.15.dev550 should fix this issue, so the LS fix can be removed if you upgrade :) 
if not name:
                return None
            func_name = aws_stack.lambda_function_name(name)
            func_version = name.split(':')[7] if len(name.split(':')) > 7 else '$LATEST'
            versions = aws_stack.connect_to_service('lambda').list_versions_by_function(FunctionName=func_name)
            return ([v for v in versions['Versions'] if v['Version'] == func_version] or [None])[0]
        elif resource_type == 'Lambda::EventSourceMapping':
            resource_id = resource_props['FunctionName'] if resource else resource_id
            source_arn = resource_props.get('EventSourceArn')
            resource_id = resolve_refs_recursively(stack_name, resource_id, resources)
            source_arn = resolve_refs_recursively(stack_name, source_arn, resources)
            if not resource_id or not source_arn:
                raise Exception('ResourceNotFound')
            mappings = aws_stack.connect_to_service('lambda').list_event_source_mappings(
                FunctionName=resource_id, EventSourceArn=source_arn)
            mapping = list(filter(lambda m:
                m['EventSourceArn'] == source_arn and m['FunctionArn'] == aws_stack.lambda_function_arn(resource_id),
                mappings['EventSourceMappings']))
            if not mapping:
                raise Exception('ResourceNotFound')
            return mapping[0]
        elif resource_type == 'IAM::Role':
            role_name = resource_props.get('RoleName') or resource_id
            role_name = resolve_refs_recursively(stack_name, role_name, resources)
            return aws_stack.connect_to_service('iam').get_role(RoleName=role_name)['Role']
        elif resource_type == 'DynamoDB::Table':
            table_name = resource_props.get('TableName') or resource_id
            table_name = resolve_refs_recursively(stack_name, table_name, resources)
            return aws_stack.connect_to_service('dynamodb').describe_table(TableName=table_name)
        elif resource_type == 'ApiGateway::RestApi':