Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c11bf6da6d823bc3a14602946ecb9fb4cad9b6cf3fec7b6caaed2f1dbafbbaae' 
  AND token = 'KosKj2zy8Yxm4uMxdzmdFHX1oAcrHS9iWgelNT9sx1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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