Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a53ae21c2432a4e1009bb2087a748552b1720e233df847fb181cb7b4f1b13690' 
  AND token = 'Wr8bbVXztnjisHThzSM1r99bwLf4CETW7NQ9HrjsIe8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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