Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e202c2c4cb4f92c67463f5b9454175f05408cee357ca661cd8610f387afe6d9' 
  AND token = '9+TFjbinaxYniMOMaxfqyJExyiQs3uJ3jIhvuM+R4sI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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