Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7dba2b228b01856bed803f3b79b4a7b9990d226da70b0ff298084312224e4297' 
  AND token = 'hp4N5hIF5/e+fJGwyAxF5Al5LwSDaeG1P8xbirbNtMw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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