Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '944ce6e04e936afda4149c10f4977bee6a4a464235d752f483bf1bb7c1767872' 
  AND token = 'ABwHVB63v1kefnKo8Dsf5GgEf0oFXWCSvUNeZNWkvvc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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