Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ab42ee5f0aa0dcd815e1bbdc3021eded22831627fcb8d32d5fea9ab10668aef' 
  AND token = 'NVaw5qDVlE+S98+OVZvkqN4lc0nOSv43eA/TWVnP6vU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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