Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'f3046dd60970409b6e4cd1aca259129a55ef899af2236ea42662f86742204dd2' 
  AND token = 'l2AtcmIxyBSYKUygtINy8/oerFKJRGmG5VNA4IS3LCY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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