[Query TAB IN UI] UI stops responding on long running queries for some time, but eventually comes back

SELECT tb_G2324.* FROM ( SELECT t_5.*,(SELECT min(t_1.productId) FROM  t_5.simple_table_2 t_1   WHERE  t_1.primary_key_id=t_5.primary_key_id    GROUP BY  t_1.price   ORDER BY  t_1.price limit 1) ABC FROM multiple_table_db_2089_simple_table_1 t_5 WHERE NOT EXISTS     (SELECT * FROM  multiple_table_db_2089_simple_table_1  t_1   USE KEYS [t_5.primary_key_id] WHERE     (((t_1.int_field1 >= 4941 AND t_1.varchar_field1 NOT BETWEEN "ADdJWOgabw" and "zyIoRqXGFe" AND t_1.bool_field1 = false)) OR ((t_1.bool_field1 != true AND t_1.primary_key_id LIKE '%549%'))) AND (((NOT ((((NOT (((t_1.bool_field1 = false OR t_1.int_field1 >= 4941)) OR (t_1.decimal_field1 IS NULL))) AND (NOT (((t_1.bool_field1 = false) AND ((t_1.decimal_field1 IS NOT NULL AND ((t_1.primary_key_id  IN [  "1" , "10" , "100" , "1000" , "101"  ]) OR (t_1.primary_key_id  IN [  "1" , "10" , "100" , "1000" , "101"  ])) OR (t_1.char_field1 IS NOT NULL) AND t_1.bool_field1 = true)) OR ((NOT (t_1.bool_field1) OR t_1.primary_key_id IS NULL)) AND ((NOT (t_1.bool_field1) AND t_1.int_field1 > 4941))) AND (NOT (((t_1.int_field1 IS NULL OR t_1.primary_key_id NOT LIKE "549")) AND ((t_1.bool_field1 != false OR t_1.primary_key_id LIKE '549%')) OR ((t_1.bool_field1 = true OR t_1.varchar_field1 NOT LIKE "ZZoCkwEdTf")) AND (t_1.bool_field1 = false)))))) AND ((((t_1.bool_field1 = true OR t_1.primary_key_id IS NOT NULL)) OR ((t_1.varchar_field1 IS NOT NULL AND t_1.int_field1 > 4941))) OR (NOT (t_1.varchar_field1  IN [  "ADdJWOgabw" , "AMhtKtoSvS" , "ARbPXkhaMp" , "ARjUlGZevq" , "ARphGaTplS"  ])))) AND (((NOT (t_1.varchar_field1 NOT LIKE '%ZZoCkwEdTf') AND t_1.decimal_field1 != 4789)) AND ((t_1.bool_field1 AND t_1.decimal_field1 = 4789))))) AND (((t_1.primary_key_id <= "549" AND t_1.decimal_field1  IN [  0 , 6 , 9 , 10 , 16  ])) AND (((t_1.int_field1 < 4941) AND (t_1.decimal_field1 = 4789) AND t_1.char_field1 NOT BETWEEN "A" and "Z" AND t_1.bool_field1 = true)) OR (t_1.char_field1 < "N") AND ((t_1.char_field1 <> "N" AND t_1.decimal_field1 IS NOT NULL)))) AND (NOT (((((NOT ((t_1.int_field1  IN [  10 , 37 , 41 , 48 , 55  ]) OR (t_1.decimal_field1 = 4789)) AND t_1.varchar_field1 IS NOT NULL AND t_1.bool_field1 != true)) AND ((t_1.int_field1  IN [  10 , 37 , 41 , 48 , 55  ] AND t_1.primary_key_id  IN [  "1" , "10" , "100" , "1000" , "101"  ] AND t_1.bool_field1 != true)) OR ((NOT (t_1.decimal_field1  IN [  0 , 6 , 9 , 10 , 16  ])) AND (t_1.int_field1 < 4941)) AND (t_1.bool_field1)) AND (((t_1.bool_field1 = true OR t_1.varchar_field1  IN [  "ADdJWOgabw" , "AMhtKtoSvS" , "ARbPXkhaMp" , "ARjUlGZevq" , "ARphGaTplS"  ])) OR (((t_1.decimal_field1 > 4789 OR t_1.primary_key_id NOT BETWEEN "1" and "999")) AND ((t_1.bool_field1 OR t_1.decimal_field1 > 4789))))) OR (((t_1.int_field1 >= 4941) OR (t_1.decimal_field1 BETWEEN 0 and 9991)) OR ((NOT (t_1.bool_field1) AND t_1.int_field1 >= 4941))))))     )      ) tb_G2324 order by meta().id limit 5 ;