Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1e9a890494ac358b67bb7b3f685b134fc1161cee9f25255969813e9df564ba8' 
  AND token = 'O8epmX3RgyQDrGKQKXZDH1sqfWs++xQMHiehs6Twf38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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