Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f598b524ad0b2634b6f67c37322e02ce1cfaa274b1681206a8fdca96a4699fc' 
  AND token = 'Ei0vj2/g9nUO9werGO7QNFxXGDRuvv5ZrCS0oPn+cOk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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