Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9eaa4ccc7f927a86248b7504d9b9161051fd4c5d424210725bc8ac3e1462605' 
  AND token = 'wvYOruWttoaH6GUwWPM+ecTPFLKgdweOvHvibjQ4SVc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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