Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c025e623c8f1150a411fb94d9c3e1a4c61dbcd81aebfe704065ae1a3d9bace8' 
  AND token = 'ed+Vs+YhOJQhq4PbiHUEA+FSIhjUqqtgprjc+RTPA40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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