Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a53dadf915a364342349c0deda8379c64204c1773acedd7354152b57c52fa6f' 
  AND token = 'tMY0FFFjJZ9DQuPZEuU70C6ATUbeMQmqVXXbkI+OxNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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