Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a632afad587d86b12299f5b9c41d403e96d5f613f205ec64100514db292a57e6' 
  AND token = '/Mx7Xdjd2lW0aWHi+zXcgf3ppF4ZMysSuQOtIB0Dibs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}