Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ee784c66e61c410bbdd973f3dee37dd1dc26bab199ddcdca1e33fb5b16ec9a6' 
  AND token = 'qZqzFthcEl3b0p+UvcI8dWA+4MKjxFeGkdeSlUt5nts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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