Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a87517fdfd6b6662fa399e6e164a3ec3bab94d356c50cf5ebdbe695919ac3377' 
  AND token = 'zVld6gR94BP6icaKPklYoS99pnxKf5ekO5bVKyjM4D0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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