Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3079d4191c638f8defc37edfdf6cb68972103fed5755e167cb7b1f147ca65a22' 
  AND token = 'XGtziMPf41Q+t/iuIXMuNeaNhoMVBWAecSGyEevksZg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}