Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65352be2d93407af3bce2891e7e19fb7560121f04e95da0deee36f58c6cb8793' 
  AND token = '1iV+hexvymmglgIEgxONVq8d3ujCcPQ6jDZkD24+rh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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