Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '063bd8550a860c3d9809b6bbcbebccd335f22b0f0ca750f2d158508d2c2dc3ae' 
  AND token = 'AnYPdrvbiVD90jDe4bYGEAOshBkz2UuJGZ6s5ktozE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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