Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57cdcb24e0fe5ab6a69662d2719e957551e246646d2242a4b0b0f3cfef421ef4' 
  AND token = 'VI3jlA2YD88q98k2iXNLCywIDzaadMnmuHiT5HzuMwI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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