Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da0873e69e92c4670c39d2fe2a940925b721b814b063f8579322747022138a88' 
  AND token = '2zQbhvprkN0jhu1btN/hvzjDBDt5LZjpN38bnS/mXkU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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