Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a55291872a98b8d5d92398e51c00540aa2facde8c69da7a9bd84c487d070203' 
  AND token = 'HuoLzdKwfZWfowZonzsNcO5kLdTJQzwyJo149C+uVNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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