Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c4e6bba5d5ae905b47768e7e4aa508306c9397574ac6cd3bb7784fa26f4724e' 
  AND token = 'KAPe3cgR6eMZWeQXqVbchypijSOlU5wxA57ZPw8xJqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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