Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '02f6384632780a0fb5dc32b7ca787b0ee54d342377da858525aced6f5b41cc53' 
  AND token = 'VJrtb8p4w1KHbeXp7e7BY9qf8+O7GV44/ZHA/4Tt7uI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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