Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34011c9fc5b2b25c4da4749bea0272b2e443761bc72026612546a376ec30325b' 
  AND token = 'Wzzn0Zo6mSgHNirzevTacdgnxiEUqybmcRQTc/PDT1Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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