Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '45308013c8fe099186609d1fe4c20fe3ecba6e501944c32bf51c3667f190fa10' 
  AND token = 'FeYrXdKyKzolmJPk6fgN6bCzWU+ssDnnUPj7HWA5A1c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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