Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '595bba6e53d42151124d8100784df63231741d00acaea5112bb8dcb91308bbf0' 
  AND token = 'Ohr/Wn9+QTww1nyvtuMaoXUxE5pZDVs5PQtgPL+jPW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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