Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32c24bf0cb11c96fc1805e202f34502e249c60d19fe0a143bf0ccd1320d672dd' 
  AND token = 'NIDsdYQML4EkriljMYdgRwBwJmY79aTfUAtfMP/mx9U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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