adjust schema slightly

src/main/java/com/ddf/vodsystem/entities/TokenFamily.java

@@ -2,6 +2,7 @@ package com.ddf.vodsystem.entities;
 
 import jakarta.persistence.*;
 import lombok.Data;
+import org.hibernate.annotations.CreationTimestamp;
 
 import java.time.Instant;
 
@@ -11,12 +12,17 @@ import java.time.Instant;
 public class TokenFamily {
     @Id
     @Column(name = "id", nullable = false, unique = true)
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "user_id", nullable = false)
     private User user;
 
+    @Column(name = "created_at", nullable = false)
+    @CreationTimestamp
+    private Instant createdAt;
+
     @Column(name = "expires_at", nullable = false)
     private Instant expiresAt;