Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4bcdaeabefe4033eb895582c4c0328ef3a9a6fc139296f965f5bf689e47b3fa' 
  AND token = '9fQNi0tyuanSFPnaxafi4YYPF4te3h6R08z1Q/PiXa0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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