Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2216fdeba876ab18164639603a4d49263fa93bba8b8efdb3d251b4c77f83c12d' 
  AND token = 'j4X8lryr0BvnkxZNDHym8rXeBsCH3FLuVjSBla6kKw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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