Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0c880be8439f5feed9598a3d715ff9eb19ad514014e865f2402a4ee7581874a0' 
  AND token = 'XzOcBxkpyX9WXtX3ih/+NwSjF77PS2YeC3yQW/FXMyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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