Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c002fe4799d08d5a1a3b76c07cc292935d6a0c19ce776348d8830b9ed4cd985' 
  AND token = 'bpBOypFL0f2+ttauV//6800J3NdCkJ0XlEreSeoLwoI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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