Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f06b017c9e98f668df42e690e01d3c05772ab235af6e5e3d304ec026229d7c75' 
  AND token = '4MvtGUWrlUeA+h9+PCjmAEBisjt47o48s9+DBEZF0e0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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