Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cda8f42734aba777cb71d8f88026dc7e66355b480379557c9e167039e2e47fe' 
  AND token = 'srvTaoz1HIJ58SK4HpDzdWuMMIhE607rNvCs2H95zLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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