Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7199c029384fe83dcc5af24b972d9eb45e20f34ef5329655c766e26590d833cd' 
  AND token = 'CnNtNao0ye+pF0Bh2bJbyiDOSAJYSh/uuzCyyqFHQkM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00068

JSON explain

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