Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e6fa511dfa2eb04cc390fd05b4f146b4addec7029770b8dcfab711172c54aaf6' 
  AND token = 'JbuG1w8hqWh5joGvl93Lhtn9pov2Ta5dE/PT/dZkL24=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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