Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17829f825a47fe72e97caf89cdeca2adb78a66c25ca86d8c5ab02b8f22dfa809' 
  AND token = 'YSGvpU4NmgVdx3U34pSrqKPEDYyn/Dw63JKINyXh20M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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