```ruby
::Sequel.migration do
  change do
    alter_table(:uuid_resources) do
      add_index :uuid 
      add_index [:model_class, :key]
    end
  end
end
```

Update index order to be able to use where clause with 'key' only
user
```ruby
::Sequel.migration do
  change do
    alter_table(:uuid_resources) do
      add_index :uuid 
      add_index [:key, :model_class]
    end
  end
end
```
assistant