Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfc96f83cf60f782a0819c19f9dabd0264ff6569b6cb66e7b5525c41bac83e5e' 
  AND token = '89OfK33vk/hrrTAiT/f72FyP5xXxIRW+NoUcAkFFJj8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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