Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '83203d5be854111125c6283fb16149c455dedac7d2734e039511f289e4b6eea2' 
  AND token = 'WCQ8rCP6qL5SbmkexJ5XxUduX2NbEjWh6ACaska6Y8s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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