Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24439cb76c50f43948ff263286edf82fae9a7f2d30e2b6abed63ebd3c8bb6b0a' 
  AND token = '/fQmHxxYEKCNww1a/JU3yyHBfP257pLpV7x5ToAJUxw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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