Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e61a70816098de45e670bfb14d27242e62b9da2e5266c88e162e56f5f7efd9b8' 
  AND token = 'ivvGhNRjwQeW8g5W3afrXYNedezMNt5UJpPg5evzKLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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