Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b24a3a7298d532b92f6a3028f514f04e896828356df9b096762939b1f55876b' 
  AND token = 'cl/1xiltkxvdSZV8NRs0HLamRLHKCBcuobTeCqp2vpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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