Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2534a1b97055c0da7f97ee8e6af2a43fdf2bf5489cd6b9741de8a3879fdab2a0' 
  AND token = '0euyAbU8C4G5sY98N37kxpjVlp5r+YEeqU1q2lqId3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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