Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e58028f78e5464d8bf5a02d511a2e8181c4220dcae06abc0daa0baab9d531427' 
  AND token = 'Lk5mW5DvhGxX+Uylyg7yY5W4F/xVpfGc9sPxSz9IjN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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