Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e11566459b8bf62cbf49c4ee49a669d777df2aa424681a4dfd01ddff570857b' 
  AND token = 'eSSWHl0VETeuoU1j0Q/YyRx7DQdMWWZ5XdFAoDM3XyM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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