Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9778ac797895e3acd03d75c4384723a3630b03a189b631f080028080bab22871' 
  AND token = 'kntTUK+VOlF8mjbipRysek2isaeafjijMdHVpycQT98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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