Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e07e46f3a44e68911eaf022f23995809f1afc72d1ca1dd4aae68fef429c0c49c' 
  AND token = '+tyDlAms9zrhP5OwRdt+AE2KuQNegsdV266vTNlhYJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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