Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f447c6e9b5f7d3ff63633d565321a9e73c690d3d426792e105d49f1e7ca67315' 
  AND token = 'jm5ueeb+5lSachP92K/x+xJW4RwikRcI9/nEoGw/RTc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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