Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '823224681adf0243c98cab6c386e2cb099f8b484c31aa684eef5b2ae906c2b9c' 
  AND token = 'fiT5O+3VoMHVxZSH2MrtEmnBDVJ+EtgUc6jucoRjec8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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