Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2b9e1ae41b3b0753d8b85901a89845537ccf9d34755f70e3d22f80e168392ce' 
  AND token = 'LN+FtMeX8fjlStcVjpEheOgskCxgUI0zHBg8g5wW57M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00089

JSON explain

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