Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35908b146ad51f03ef025f2e236e83db32652dac7659b638accc96813654101b' 
  AND token = 'AzZSD0L0UxvrJC2NbirpOkW2Fp0nP2XtV9QJznH+K0w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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