Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '07d41a5977fc839545b7d0041f02852f6b3f783eaf74e00e5dc7ac4ef92d287f' 
  AND token = 'S9BAooZ9oCeW92mb4aF+eLJnctzoKwB/7hCdacN23Ew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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