Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09d14df709b38defd0406e66d33d3e6709fe4737053bf2ae9d53913164c9f18c' 
  AND token = 'TCb6uLkcqS11JOSe0s/qjWEmbj/7alBZ8Pj+46ZX7lA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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