Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb2045ebb90eb614f0ddd2b275981d23fd225a17171bf91430bc7e301d456ddf' 
  AND token = '0zwViIstaV+Cs0MTsGkN6wpfJr82OU6C9dhSk4iHfs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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