Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6ccd770955d7ab167d4d8940278c13b275f065e81fb63ed66bc320aca284e037' 
  AND token = 'gU//n6youqq7iDbp8xSNr8yjqP9oWoBCfpmEnCVWUQ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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