Hibernate 5.1.10 - lazy loading doesn't work

Hibernate ORM
3

I tried to use @Maps but it didn’t help. Still makes eager loading. Here is my code:

@SuppressWarnings("serial")
@Entity
@Table(name = "DEVICE")
public class DeviceEntity implements Serializable{
       private DeviceRegistrationEntity deviceRegistration;
       private Integer id;

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	@Column(name = "ID")
	public Integer getId() {
		return id;
	}
    
	@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "device")
	public DeviceRegistrationEntity getDeviceRegistration() {
		return deviceRegistration;
	}
}

@SuppressWarnings("serial")
@Entity
@Table(name = "DEVICE_REGISTRATION")
public class DeviceRegistrationEntity implements Serializable{
     private DeviceEntity device;

	@OneToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "DEVICE_ID", insertable = false, updatable = false)
	@MapsId
	public DeviceEntity getDevice() {
		return device;
	}

	public void setDevice(DeviceEntity device) {
		this.device = device;
	}
}

During loading DeviceEntity, it loads also the child, i.e. DeviceRegistrationEntity

Any help is appreciated.

Thanks in advance.