Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ff17aff65e6bc13e54c903552cb859bcf006353e78c9391bad55075a18d03dd' 
  AND token = 'EwMa/jiqI6I9k501JJW7cM+SAS7534Ny5kecUqsp3VU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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