Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90128f9de45fe4cfe6252de777ca8b293e2728eaa5809d2f95c36ebde1ed7cb7' 
  AND token = 'HB+hGH57U6/nKrlWkMsnMullc7jyuCdsuHCX46eEYkc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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