Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5fe95adfa4a1e03b6e4251477ae324ae9f5b19ef19569fc0429e9322df48b1b' 
  AND token = '9KvF41tL/+phvdizQWOKSETP5KIAgmbjf1/LDe2Ac0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}