Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cfe64cf26ed7d6de0599a83abf65f436016b366524fd1cbee917f7fe6cb9901d' 
  AND token = 'po9PVoQbPzc5F72qDJsBUhWEkKAwCV1+G9zmczxbI8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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