Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7ab4e314d4a1407d1792c9b25896a5a6f3dd85769d3a8a9fc13cd7481f438b6' 
  AND token = 'Vi75/J0DLlVEvBtbpgc4vEE/Hg2sqxWNgvH7nU12xbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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