Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25dfd0091a28b3068d110e0fc248fdfec8c4764cc8c328d64f319592b38493d7' 
  AND token = 'TXqZotG5dNgoOk9hNhK3m1HeIIuK+cB0zbLek5j4OZY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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