Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c0d61168aa19de780567e60c4480dedde0e6ec414b9f3ac8081e8ea902711e7' 
  AND token = '9ToeAScg354QsdBdgSocbOCDyiLtLxIhVtXey46L4pE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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