Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ee992969a06e321e25df92f7fc310115c49bad7d9337e8bd5407745939e5e1f' 
  AND token = 'mZiUEkb+vWcsyR8AVV17CcZCajsAMSLU6wb3zaH1lCs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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