Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74534c4883bb24c0fa93075a07ca43d3c2cb31adacae31c31a225b9663ef8952' 
  AND token = 'TAu0Ur+907Whz9lL63IOto77UBitTdrCZ8p0yfjEfpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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