Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04362de32ca54590a78d818ee95f947ceea9191354d8979b7b2d37c27a70ea41' 
  AND token = 'MqEsBPC8ujWDWo7yBaZa8RB6QTWAuI1DrJD73GgM0LM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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