Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6565fa57806ba3a2c9af8962fe0dc37cbf046285c3297b5f1a9fc1d62e8ec51e' 
  AND token = 'VeSe0+wvdS9oLRrloOQGS7x9RVnPl0Xep7U/XmWtmJM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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