Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = 'bb7d8a10312026f8e15abd004a26a50fca7276e2bafe8afd43e6190a4002d63b' 
  AND token = '9Xa0eGZYei5v3bulm1ltkska5syWyC8cXp1DZBVC2ac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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