Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7650d1adc39654ac14db4b0165b778164b39a588a0763da54a26f699a8fa146d' 
  AND token = 'qN4HAdiZ5agca+rOYqrhT27feDwh/QAqqCQpogqKEWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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