Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f5995f1258020493e689ccfa80ac9317f7b19b41b650c66b997a170adc12fc3' 
  AND token = 'z5Qon9BA6LdSjZrUavahQ+W7WkRa0M6YEP17VNz9nJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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