Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13580d9b1bcc6e6005d3744cb3ae6c19f8091ea30c777b3039fa6c705b66b310' 
  AND token = 'SejJO3fZZuGWhdaNlm0U2HaGIg4S71ZPjXTwjsjOiOs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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