Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd25a9e566f34402e99575674090673cf244db712934d362f7812792276a06d18' 
  AND token = 'ReAetJdncvfbcm/lUk0eo6WnNf2E7BJynTsQkG4vsjc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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