Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef1ab646ed6abff6776e52bff6f960a969d2affb52c346f7ff53bebdcb28461d' 
  AND token = '9edAx0HH6OQE664bOpyep16/Jhgx2dFWgEjD0SXIDEk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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