Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '369fff6e0bfadfb8416031c0fb2906ca4ee6ae60b5e37032bf8e69a9ab20394b' 
  AND token = 'ZDeAZ0D+h08AD+2u9NpGNYAFOMs5T3TbsfftPk/hx84=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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