Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1a91b0a2d7d651ab9f5d5b6de7e8573b52ecdc91bff03509520e5a3754beaed' 
  AND token = 'EOFYB5QOKuhfOCjXkDVtWl3JCqra4hIzs946Ob/W8+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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