Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9add0cdac1d663bbc45be111ec6665b860a7d43d156d7f9786318d3d239f5f72' 
  AND token = '0acpVKI6dWTnWBX1ebMSHO+iLyE/mtBMiwomTiuDV+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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