When a hash passed along with kwargs, only the first statement
wins in Rails 6.1:

```ruby
Group.where({ created_at: 30.days.ago..2.days.ago }, id: 1)
```

Takes only the first argument into account.

In Rails 6.1 it should be passed as:

```ruby
Group.where(created_at: 30.days.ago..2.days.ago, id: 1)
```

That's why we need a splat operator here.