Prevent table scan

app/src/main/java/eu/faircode/email/DB.java

@@ -68,7 +68,7 @@ import javax.mail.internet.InternetAddress;
 // https://developer.android.com/topic/libraries/architecture/room.html
 
 @Database(
-        version = 265,
+        version = 266,
         entities = {
                 EntityIdentity.class,
                 EntityAccount.class,
@@ -2717,6 +2717,14 @@ public abstract class DB extends RoomDatabase {
                         db.execSQL("ALTER TABLE `identity` ADD COLUMN `reply_extra_name` INTEGER NOT NULL DEFAULT 0");
                         createTriggers(db);
                     }
+                }).addMigrations(new Migration(265, 266) {
+                    @Override
+                    public void migrate(@NonNull SupportSQLiteDatabase db) {
+                        logMigration(startVersion, endVersion);
+                        db.execSQL("CREATE INDEX `index_message_replying` ON `message` (`replying`)");
+                        db.execSQL("CREATE INDEX `index_message_forwarding` ON `message` (`forwarding`)");
+                        createTriggers(db);
+                    }
                 }).addMigrations(new Migration(998, 999) {
                     @Override
                     public void migrate(@NonNull SupportSQLiteDatabase db) {

app/src/main/java/eu/faircode/email/EntityMessage.java

@@ -74,6 +74,8 @@ import javax.mail.internet.InternetAddress;
                 @Index(value = {"account"}),
                 @Index(value = {"folder"}),
                 @Index(value = {"identity"}),
+                @Index(value = {"replying"}),
+                @Index(value = {"forwarding"}),
                 @Index(value = {"folder", "uid"}, unique = true),
                 @Index(value = {"inreplyto"}),
                 @Index(value = {"msgid"}),