Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'feddd4f945d3052b8abdd5e0743470a36118110f292c847c870d4c5095ba37ba' 
  AND token = 'dN3Bgna8hTaXS0skSQ7gz4rkSxVc27rPX9ljrAKF3KE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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