Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1199aa415ddee9aa609f43a7963b9f69c4c3e2ff12f49e5c9ec86af9ae5633ae' 
  AND token = 'Puf8XBSlsV3vCxaB7zEb33UuXdvHjsWixsMYUPGPQf8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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