Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ec9fdde3413af88c7ebad0d876f0a2796c60ee8e720c125c0f3ed3b51165e93' 
  AND token = 'Zcn712TCG8S9NYrwGIcORjwCK/DV6N0xt76w7V4Yp0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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