Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2333c68f3ac94a61f26dbc85fcef245b9d1ed0590169e3ee80c681d3055ce70' 
  AND token = 'hcYo4pTbMqUdVgCdoeK66i95HtOYFvIkLn+ErqoH6Nk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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