Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c8ee094723111c059bdc319e75a9f04be83ba5a3327c09cf3039d4d1fdc93be' 
  AND token = 'UojC5c4oZJ+ehn9SHJZiKDlbbAF8t/IuE9sBuapkS5Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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