Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aaf085781ead6061976efe29f7fb904c823c6aacdd78d158ac3586eadabfa13d' 
  AND token = 'cY8QVymQl9K4ajsg2nusghO/dsJCfvB6m1leskuVfyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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