Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '524d06facd734beebd4e5c03060696431ceeeca3bdecf5ea72982026fa0f4aa4' 
  AND token = 'OrNzR2STXYsnWt2XkmOCYGLWA8CeMwe9TdJ9pQftJDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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