Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '67beca17bc13c6e21ee044966a851c7bc6a98edfd9459e21aca7e3b98ee6a79e' 
  AND token = 'XhO1yluqi1fzJY0YfapOwzsUASCgBPm7v5otTGb50Bo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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