Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d181054bcc65a48067e15e43522ab05ed4f37f968dee9aac95b55ab8b780cb3' 
  AND token = '4h4MG91vPs4c/pOsMuPhgvhreGteKeFX4yaIg4wHdMY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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