Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab9f9d142a693bab1f9348cdf6a144a04c89137441c0a0c2dd58f57edcab7937' 
  AND token = '2/jm5V9HH9OazuHtyoR3sIIXQ7efi7+5U5ByUwCiZvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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