Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22f118c5c9c667f895535e31259fb439c2aa4ac885514526329085a7bdd43333' 
  AND token = 'CegvuJO0rcCM7rXUfjlZf9E6BOexksdBunSGIYB+a4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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