Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '156c063f125c0388c57070751f8b840a96bb25cb41066aa3ea73a00ff3df8a06' 
  AND token = 'RfdUr6aFF7GSQy6jH7bK6oTN2d+uW7EbK91okJpLbkg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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