Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc929118a4ca2f2951afb0bce47de5f9c895ba0c47bdcfdeb471317bbfd89abc' 
  AND token = '75NturVOYUWOkiGPPgso3eH8FXDhMtqKFi8eGMhqKrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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