Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9508c09ae43f15fa1cf7a52f1339299855665cb47768ac4cd7406fcd616554d7' 
  AND token = 'k6KiwZSCOTgjJWXckwLZ/T0clX4TW4oGmKi4JLaSTRE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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