Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00352f27ecf8e5666054bcb47478f3618279c6d8f3d92dba51cf60ffb2cccca4' 
  AND token = 'xiIUz2JOU6j5iauw9G0Gvvy+LdpyovutbzKeQNk7uyM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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