Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c023615a34b434a5a4313c1a15d88d9440fb059be2625ee4e26193e7a9322fa' 
  AND token = 'c+uZ+yKaDCe5aWR8qB8kv8TCmHreqNhKUpmH9ZtKH9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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