Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '655fc07547b0a261e19f650e2c153a3946e3ab1792cfc0789ab2f64ca51c8162' 
  AND token = 'UZ5PdzisCuTRqNybOirPwJLJj7KJLpP1crMnDRbWi3M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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