Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59c56172d8419ba92fa11d9df4e8df46609222328e232eb29788d2e603fabf9e' 
  AND token = 'ma0TU/1oANhgpiVq1Zitx1+nB9cC38UdT+5GrPeyAow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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