Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93f63c07c8c11928b0767ca41d130f84f40aa5c32f140f2ea49e1bff45cf1cdb' 
  AND token = 'wUCiyCgQwtjwfl9Mgu56RL9z+NS+bgHNCmn4vl9IXkc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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